html{
    font-size: 10px;
}
h1{
    font-size: 1.8rem;
    font-family: "Times New Roman","楷体";
    font-weight: bold;
}
p{
    font-size: 1.4rem;
    line-height: 2rem;
    font-family: "Times New Roman","Times","宋体";
}
p span{
    color: red;
}